Free Vibrations Types Quiz

In which type of vibration do the particles of the shaft or disc move parallel to the axis of the shaft?

What type of vibrations occur when the particles of the shaft or disc move in a circle about the axis of the shaft?

When the particles of the shaft or disc move approximately perpendicular to the axis of the shaft, what type of vibrations are induced?

Which type of vibration causes the shaft to be twisted and untwisted alternately?

If a system executes longitudinal vibrations, what is happening to the shaft?

What type of stresses are induced in the shaft during transverse vibrations?

What term is used to describe the speed at which the shaft runs so that the additional deflection of the shaft from the axis of rotation becomes infinite?

What factor contributes to the bending of a shaft carrying gears or pulleys?

In a single rotor system, where is the node located?

What is the force resisting the deflection 'y' in a rotating shaft with a rotor?

What causes a rotating shaft to deflect due to centrifugal force?

What does the term 'critical or whirling speed' correspond to in terms of natural frequency?

In a rotating shaft with a rotor, what happens when the circular frequency 'n' is equal to 'c'?

What determines the natural frequency for Rotor A in a two-rotor system?

What must be true for torsional vibrations to occur in a two-rotor system?

What affects the natural frequency in a three-rotor system?

What type of vibrations occur when the particles of the shaft or disc move in a circle about the axis of the shaft?

During transverse vibrations, what type of stresses are induced in the shaft?

In which type of vibration do the shaft particles move parallel to the axis of the shaft?

What occurs during transverse vibrations in terms of shaft behavior?

What type of vibrations cause tensile and compressive stresses to be induced alternately in the shaft?

What is the term for vibrations where the shaft is twisted and untwisted alternately?

What process does the refrigerant undergo in the condenser?

What happens to the refrigerant as it passes through the expansion valve?

During which process does the liquid refrigerant evaporate?

What is the pressure at point 4 in the system?

What does the refrigerant give to the surrounding condensing medium in the condenser?

What is the speed at which the additional deflection of the shaft becomes infinite known as?

In a rotating shaft with gear or pulleys, what force causes the shaft to bend?

What happens to the value of deflection 'y' when the circular frequency 'n' equals 'c'?

What is the unit for critical or whirling speed?

In a two-rotor system, when do torsional vibrations occur?

What factor determines the bending of a shaft carrying gears or pulleys?

Where does the node lie in a two-rotor system during torsional vibrations?

'Free Torsional Vibrations' occur in a system where:

'Modulus of rigidity' represents the resistance of a shaft to:

'Efficiencies of both living and non-living beings depend to a great extent on the physical environment.' implies that:

What is the machinery known as that performs the operation of increasing the temperature inside a car?

In a refrigeration system, what is the direction of heat flow?

What does air conditioning involve controlling in addition to temperature?

Why is controlling temperature alone not sufficient for comfort according to the text?

Which city is used as an example in the text to explain the importance of controlling both temperature and humidity for comfort?

What additional parameter besides temperature and humidity is mentioned as essential for comfort in the text?

What must be done to pump heat into or out of a space according to the text?

What role does a heat pump play in controlling the temperature of a space?

'Heat flows from a body at a higher temperature to a body at a lower temperature' is an example of what concept?

'Heat is pumped out from a lower temperature space to a higher temperature environment' is characteristic of which system?

What was the most significant development in refrigeration systems in the 1930s?

What is the purpose of an evaporator in a refrigeration system?

When was the first two-stage modern compressor developed?

What is the primary function of an absorber in a vapor-absorption refrigeration system?

Which development occurred when the refrigeration industry had stagnated on NH3 and SO2 as refrigerants?

What is the purpose of a generator in a vapor-absorption refrigeration system?

What is the role of a condenser in a refrigeration system?

When did significant diversification in refrigeration systems begin to occur?

What is the primary purpose of air conditioning in buildings?

What are the ventilation requirements for hospitals and medical buildings?

In industrial air conditioning, what is the purpose of spot heating?

Why is control of humidity crucial in the printing industry?

What is the primary role of air conditioning in precision parts manufacturing?

Why is air conditioning essential in computer rooms?

What major contributor to cooling load is found in vehicles that are air conditioned?

Why is refrigeration important for food storage and distribution?

What special temperature condition is required in the photographic-products industry?

What role does air conditioning play in extending the life of perishable foods in food storage?

What is the main purpose of refrigeration and air conditioning?

Why is it necessary to have control over the environment?

How does refrigeration work in preserving perishable food items?

In refrigeration, where is the unwanted heat removed from a space transferred to?

How does refrigeration contribute to air conditioning in cars?

What happens to the temperature inside a refrigerator when unwanted heat is removed?

Why is it important for a car's interior to have a lower temperature than outside during summers?

What is the volume relationship between a car's interior and its surrounding environment during air conditioning?

Why is refrigeration essential for preserving perishable food items?

Why would it be uncomfortable to drive in a car without air conditioning during an Indian summer in Delhi or Kanpur?

What is the standard unit of refrigeration?

Which substance is commonly used as a refrigerant in a vapour compression cycle?

What role does the compressor play in a simple vapour compression refrigeration system?

Where is the condensed liquid refrigerant stored in the system?

What is the function of the expansion valve in a vapour compression system?

During which process of the theoretical vapour compression cycle does isentropic compression occur?

What happens to the pressure and temperature of the vapour refrigerant during isentropic compression?

Which component of a vapour compression system cools and condenses the high-pressure vapour refrigerant?

What absorbs latent heat from the solution in a simple vapour compression system?

Where is the liquid-vapour refrigerant evaporated and changed into vapour refrigerant at low pressure and temperature in a simple vapour compression system?

What distinguishes the summer air conditioning system from the winter air conditioning system?

How is industrial air conditioning different from comfort air conditioning?

What was one method used to produce ice around 4000 years ago?

Who obtained the first British Patent related to refrigeration in 1790?

Which pioneer developed a hand-operated refrigeration system using ether as the working fluid?

What was the purpose of Dr. John Gorrie's cold air machine patented in 1851?

Instead of air or ether, what substance did Dr. James Harrison use in his refrigeration machine for brewery?

In which century were East Indians producing ice by dissolving salt in water to cool beverages?